UN: Hundreds estimated killed in South Sudan

Fighting in South Sudan has killed up to 500 people, UN diplomats said Tuesday, and the United Nations fears the violence in the oil-rich East African country is "largely along ethnic lines."

The United States ordered its citizens to leave South Sudan immediately. The president of South Sudan, which is also the world's newest country, has blamed the violence on a coup attempt Sunday by soldiers loyal to his former deputy, who belongs to a different ethnic group. (AP)